/*
 *  tifm.h - TI FlashMedia driver
 *
 *  Copyright (C) 2006 Alex Dubov <oakad@yahoo.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#ifndef _TIFM_H
#define _TIFM_H

#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/workqueue.h>

/* Host registers (relative to pci base address): */
enum {
	FM_SET_INTERRUPT_ENABLE = 0x008,
	FM_CLEAR_INTERRUPT_ENABLE = 0x00c,
	FM_INTERRUPT_STATUS = 0x014
};

/* Socket registers (relative to socket base address): */
enum {
	SOCK_CONTROL = 0x004,
	SOCK_PRESENT_STATE = 0x008,
	SOCK_DMA_ADDRESS = 0x00c,
	SOCK_DMA_CONTROL = 0x010,
	SOCK_DMA_FIFO_INT_ENABLE_SET = 0x014,
	SOCK_DMA_FIFO_INT_ENABLE_CLEAR = 0x018,
	SOCK_DMA_FIFO_STATUS = 0x020,
	SOCK_FIFO_CONTROL = 0x024,
	SOCK_FIFO_PAGE_SIZE = 0x028,
	SOCK_MMCSD_COMMAND = 0x104,
	SOCK_MMCSD_ARG_LOW = 0x108,
	SOCK_MMCSD_ARG_HIGH = 0x10c,
	SOCK_MMCSD_CONFIG = 0x110,
	SOCK_MMCSD_STATUS = 0x114,
	SOCK_MMCSD_INT_ENABLE = 0x118,
	SOCK_MMCSD_COMMAND_TO = 0x11c,
	SOCK_MMCSD_DATA_TO = 0x120,
	SOCK_MMCSD_DATA = 0x124,
	SOCK_MMCSD_BLOCK_LEN = 0x128,
	SOCK_MMCSD_NUM_BLOCKS = 0x12c,
	SOCK_MMCSD_BUFFER_CONFIG = 0x130,
	SOCK_MMCSD_SPI_CONFIG = 0x134,
	SOCK_MMCSD_SDIO_MODE_CONFIG = 0x138,
	SOCK_MMCSD_RESPONSE = 0x144,
	SOCK_MMCSD_SDIO_SR = 0x164,
	SOCK_MMCSD_SYSTEM_CONTROL = 0x168,
	SOCK_MMCSD_SYSTEM_STATUS = 0x16c,
	SOCK_MS_COMMAND = 0x184,
	SOCK_MS_DATA = 0x188,
	SOCK_MS_STATUS = 0x18c,
	SOCK_MS_SYSTEM = 0x190,
	SOCK_FIFO_ACCESS = 0x200
};

#define TIFM_CTRL_LED             0x00000040
#define TIFM_CTRL_FAST_CLK        0x00000100
#define TIFM_CTRL_POWER_MASK      0x00000007

#define TIFM_SOCK_STATE_OCCUPIED  0x00000008
#define TIFM_SOCK_STATE_POWERED   0x00000080

#define TIFM_FIFO_ENABLE          0x00000001
#define TIFM_FIFO_READY           0x00000001
#define TIFM_FIFO_MORE            0x00000008
#define TIFM_FIFO_INT_SETALL      0x0000ffff
#define TIFM_FIFO_INTMASK         0x00000005

#define TIFM_DMA_RESET            0x00000002
#define TIFM_DMA_TX               0x00008000
#define TIFM_DMA_EN               0x00000001
#define TIFM_DMA_TSIZE            0x0000007f

#define TIFM_TYPE_XD 1
#define TIFM_TYPE_MS 2
#define TIFM_TYPE_SD 3

struct tifm_device_id {
	unsigned char type;
};

struct tifm_driver;
struct tifm_dev {
	char __iomem *addr;
	spinlock_t lock;
	unsigned char type;
	unsigned int socket_id;

	void (*card_event) (struct tifm_dev * sock);
	void (*data_event) (struct tifm_dev * sock);

	struct device dev;
};

struct tifm_driver {
	struct tifm_device_id *id_table;
	int (*probe) (struct tifm_dev * dev);
	void (*remove) (struct tifm_dev * dev);
	int (*suspend) (struct tifm_dev * dev, pm_message_t state);
	int (*resume) (struct tifm_dev * dev);

	struct device_driver driver;
};

struct tifm_adapter {
	char __iomem *addr;
	spinlock_t lock;
	unsigned int irq_status;
	unsigned int socket_change_set;
	unsigned int id;
	unsigned int num_sockets;
	struct completion *finish_me;

	struct work_struct media_switcher;
	struct device dev;

	void (*eject) (struct tifm_adapter * fm, struct tifm_dev * sock);
	int (*has_ms_pif) (struct tifm_adapter * fm, struct tifm_dev * sock);

	struct tifm_dev *sockets[0];
};

struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets,
					struct device *dev);
int tifm_add_adapter(struct tifm_adapter *fm);
void tifm_remove_adapter(struct tifm_adapter *fm);
void tifm_free_adapter(struct tifm_adapter *fm);

void tifm_free_device(struct device *dev);
struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm, unsigned int id,
				   unsigned char type);

int tifm_register_driver(struct tifm_driver *drv);
void tifm_unregister_driver(struct tifm_driver *drv);
void tifm_eject(struct tifm_dev *sock);
int tifm_has_ms_pif(struct tifm_dev *sock);
int tifm_map_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
		int direction);
void tifm_unmap_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
		   int direction);
void tifm_queue_work(struct work_struct *work);

static inline void *tifm_get_drvdata(struct tifm_dev *dev)
{
	return dev_get_drvdata(&dev->dev);
}

static inline void tifm_set_drvdata(struct tifm_dev *dev, void *data)
{
	dev_set_drvdata(&dev->dev, data);
}

#endif
